On Fri, May 12, 2023 at 12:55:46PM +0200, Stephan Gerhold wrote:
> On Fri, May 12, 2023 at 11:07:10AM +0200, Francesco Dolcini wrote:
> > Hello all,
> > I recently did have a regression on v6.4rc1, and it seems that the same
> > exact issue is now happening also on v6.1.28.
> >
> > I was not able yet to bisect it (yet), but what is happening is that
> > libusbgx[1] that we use to configure a USB NCM gadget interface[2][3] just
> > hang completely at boot.
> >
> > This is happening with multiple ARM32 and ARM64 i.MX SOC (i.MX6, i.MX7,
> > i.MX8MM).
> >
> > The logs is something like that
> >
> > ```
> > [* �F] A start job is running for Load def…t schema g1.schema (6s / no limit)
> > M[K[** �F] A start job is running for Load def…t schema g1.schema (7s / no limit)
> > M[K[*** �F] A start job is running for Load def…t schema g1.schema (8s / no limit)
> > M[K[ *** �F] A start job is running for Load def…t schema g1.schema (8s / no limit)
> > ```
> >
> > I will try to bisect this and provide more useful feedback ASAP, I
> > decided to not wait for it and just send this email in case someone has
> > some insight on what is going on.
> >
>
> I noticed a similar problem on the Qualcomm MSM8916 SoC (chipidea USB
> driver) and reverting commit 0db213ea8eed ("usb: gadget: udc: core:
> Invoke usb_gadget_connect only when started") fixes it for me. The
> follow-up commit a3afbf5cc887 ("usb: gadget: udc: core: Prevent
> redundant calls to pullup") must be reverted first to avoid conflicts.
> These two were also backported into 6.1.28.
Thanks for the confirmation.
> I didn't have time to investigate it further yet. With these patches it
> just hangs forever when setting up the USB gadget.
I will double check that the same is happening to me and send a revert
afterward.
Francesco
